28003941

素因数分解:

$3^3\times 7^2\times {\mathrm{61}}^1\times {\mathrm{347}}^1$

素因数の和:431

約数の個数: 48

約数和(自身を含む): 49193280

約数和(自身を除く): 21189339

約数列:

[1, 3, 7, 9, 21, 27, 49, 61, 63, 147, 183, 189, 347, 427, 441, 549, 1041, 1281, 1323, 1647, 2429, 2989, 3123, 3843, 7287, 8967, 9369, 11529, 17003, 21167, 21861, 26901, 51009, 63501, 65583, 80703, 148169, 153027, 190503, 444507, 459081, 571509, 1037183, 1333521, 3111549, 4000563, 9334647, 28003941]

約数ペア:

[(1, 28003941), (3, 9334647), (7, 4000563), (9, 3111549), (21, 1333521), (27, 1037183), (49, 571509), (61, 459081), (63, 444507), (147, 190503), (183, 153027), (189, 148169), (347, 80703), (427, 65583), (441, 63501), (549, 51009), (1041, 26901), (1281, 21861), (1323, 21167), (1647, 17003), (2429, 11529), (2989, 9369), (3123, 8967), (3843, 7287)]